We all grow old. We all die. For Aubrey de Grey, a biogerontologist and chief science officer of the SENS Research Foundation, accepting these truths is, well, not good enough. He decided in his late twenties (he’s currently 54) that he “wanted to make a difference to humanity” and that battling age was the best way to do it. His life’s work is now a struggle against physics and biology, the twin collaborators in bodily decay.